Hi, does the JSON offer a straight global average (rather than individually by market) and then ideally a USD conversion from bitcoinaverage (that site is open-sourced if you didn't know - but integrations need to built per exchange.) You may want to open this one too.
All the fiat currency values are calculated by taking the weighted averages in DOGE, and multiplying by the price of 1 BTC from BitcoinAverage.
If you don't see what you're looking for here, let me know: http://dogecoinaverage.com/USD.json